Hi ffmpeg guru,
I'm writing a media player based on ffmpeg. And I want to play the video with 2x, 4x, 8x speed, how can I do to implement it programmatically. I set the video stream filter like "setpts=0.5*PTS" in the code, but it didn't seem to work while the audio stream with filter string "atempo=2.0,atempo=2.0" worked well. The video filter "setpts=0.5*PTS" cannot complete it by itself or should I have to manually judge and drop frames? My player's code is almost the same as ffplay.c. Any help is very appreciated. Example code will be better.
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